2009年6月26日 · Data transfer object (DTO), formerly known as value objects or VO, is a design pattern used to transfer data between software application subsystems. DTOs are often used in conjunction with data access objects to retrieve data from a database.

2009年10月23日 · Data transfer object (DTO), formerly known as value objects or VO, is a design pattern used to transfer data between software application subsystems. DTOs are often used in conjunction with data access objects to retrieve data from a database.

2023年3月19日 · I have heard this intermediary object referred to as a DTO, but if your ManagedBeans and Entities are operating within the same JVM, then there is little benefit to using the DTO pattern. Futhermore, consider Bean Validation annotations (again, if you're unfamiliar with Java EE, know that Bean Validation is an API for validating data).

2022年9月27日 · O DTO se opõe a um model justamente por não ter comportamentos de regras de negócio ou até mesmo de persistência ou outra forma de manipulação desses dados. A forma de comunicação, especialmente fora do processo, não é algo que o DTO se importe ou até mesmo que saiba. É comum ser serializado, mas isso não precisa acontecer.

2011年1月9日 · Business object is clever object which contains data and methods which performs operations (change data) on this object. When you expose BO to upper layer, it can call your object's public methods. Sometimes you don't want this and for that reason you create DTO which only offers data but not methods. DTO doesn't have to transport all BO data.

DTO is more about the usage of the object while POCO is more of the style of the object (decoupled from architectural concepts). One example where a POCO is something different than DTO is when you're talking about POCO's inside your domain model/business logic model, which is a nice OO representation of your problem domain.

2021年8月19日 · There are probably a lot of ways to do this, here is one of those ways using Java Streams:. List<MyObject> objects = // Get objects from database List<MyDto> dtos = objects.stream().map(myObj -> { MyDto newDto = new MyDto(); // Set your properties here, in this example i'm setting a name and description: newDto.setName(myObj.getName()); newDto.setDescription(myObj.getDescription()); // Repeat ...

2015年2月24日 · the DTO -> Entity conversion should be done in the Controller as well after validating the DTO returned from the jsp page Its gives you more control over the process and you do not have to change the service/persistence classes every time some logic populating the Entity is changed.

In my application's architecture I usually send the object or list of objects from the data access layer to the web layer via the service layer, in which these objects get transformed from a DAO object to a DTO object and vice versa. The web layer don't have any access to DAO objects and the DAO layer do not use DTOs.

2016年1月4日 · RegisterCommand DTO may look very similar to CustomerWithAddress DTO because it has the same fields but in fact these 2 DTOs have very different meanings and do not substitute each other. For example, CustomerWithAddress contains AddressDetails , while a simple String address representation may be enough to register a customer.